Home / 105,702.40-158,446.72-66,287.04

Finding the Fourth Proportional to 105,702.40, 158,446.72 and 66,287.04

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Solution

The fourth proportional to 105,702.40, 158,446.72 and 66,287.04 is: 99,363.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,702.40 : 158,446.72 = 66,287.04 : x
  2. Step 2: Convert to fraction form
    105,702.40/158,446.72 = 66,287.04/x
  3. Step 3: Cross multiply
    105,702.40x = 158,446.72 × 66,287.04
  4. Step 4: Simplify right side
    105,702.40x = 10,502,964,066.51
  5. Step 5: Solve for x
    x = 10,502,964,066.51/105,702.40
  6. Step 6: Final answer
    x = 99,363.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.